"They brought him on a stretcher," said a woman who gave her first name, Linda, and was nearby when an ambulance arrived. "They were working on him for a while. They tried to give him CPR and all that."

The suspects fled south on 99th St. in a black Nissan, police said. (Jeff Bachner/for New York Daily News)

The son was beat up, possibly pistol-whipped.

Nitesh Singh, 28, who owns a nearby cafe, said the son two weeks ago told him he was nearly robbed at gunpoint by three men while he was in his car.

"He said he pushed the guy, he put the car in reverse and flew," Singh said. "He told me to watch out, be vigilant. 'They tried to rob me.'"

It wasn't clear, however, if those men are the same three who shot his father.